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(3y+2)(y-4)-3(y-2)(y-3)

(3y+2)(y-4)-3(y-2)(y-3)

的有关信息介绍如下:

(3y+2)(y-4)-3(y-2)(y-3)

原式=3y^2-12y+2y-8-3(y^2-3y-2y+6) =3y^2-10y-8-3y^2+9y+6y-18 =5y-26